~x-ai/grok-latest → B (2:3)

Side B adds a focused, tested product surface: CLI formatting of existing connectivity stats (density, components, comparisons-to-connect) on pair suggestions so voters can act on graph topology. Side A is mostly mechanical modularization—deleting leftover monolithic forum.rs and relocating the same handlers into forum/*—which fixes module-root ambiguity but adds little new behavior beyond structure and a small import path fix.